λ
Sequence Observatory

8,006,648

23 × 13 × 167 × 461
Abundant Even Composite

Starting at 8,006,648, the Collatz iteration reaches 1 after 305 steps. The first transition is 4003324; the starting value is even with 32 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 13 × 167 × 461
Distinct Prime Factors 4
Square Status No
Abundance Measure Abundant

Analytical Properties

Total Divisors 32
Divisor Sum (σ) 16,299,360
Proper Divisor Sum 8,292,712
Digit Sum / Digital Root 32 (Root: 5)
Adjacent Primes #8006641 ← → #8006651

Radix Representation

Decimal 8006648
Binary 11110100010101111111000 (23 bits)
Octal 0o36425770
Hexadecimal 0x7A2BF8

Divisor Catalog (32)

1 2 4 8 13 26 52 104 167 334 461 668 922 1,336 1,844 2,171 3,688 4,342 5,993 8,684 11,986 17,368 23,972 47,944 76,987 153,974 307,948 615,896 1,000,831 2,001,662 4,003,324 8,006,648

Collatz Trajectory (305 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

8,006,648 4,003,324 2,001,662 1,000,831 3,002,494 1,501,247 4,503,742 2,251,871 6,755,614 3,377,807 10,133,422 5,066,711 15,200,134 7,600,067 22,800,202 11,400,101 34,200,304 17,100,152 8,550,076 4,275,038 2,137,519 6,412,558 3,206,279 9,618,838 4,809,419 14,428,258 7,214,129 21,642,388 10,821,194 5,410,597 16,231,792 8,115,896 4,057,948 2,028,974 1,014,487 3,043,462 1,521,731 4,565,194 2,282,597 6,847,792 3,423,896 1,711,948 855,974 427,987 1,283,962 641,981 1,925,944 962,972 481,486 240,743 722,230 361,115 1,083,346 541,673 1,625,020 812,510 406,255 1,218,766 609,383 1,828,150

More profiles

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